diff --git a/docs/src/test-reporter-api/class-suite.md b/docs/src/test-reporter-api/class-suite.md
index 7df0c10a75..80642def9e 100644
--- a/docs/src/test-reporter-api/class-suite.md
+++ b/docs/src/test-reporter-api/class-suite.md
@@ -46,7 +46,7 @@ Parent suite, missing for the root suite.
 
 ## method: Suite.project
 * since: v1.10
-- returns: ?<[FullProject]>
+- returns: <[FullProject]|[undefined]>
 
 Configuration of the project this suite belongs to, or [void] for the root suite.
 
diff --git a/packages/playwright/types/test.d.ts b/packages/playwright/types/test.d.ts
index 0e93e1ea2a..5d9911f07c 100644
--- a/packages/playwright/types/test.d.ts
+++ b/packages/playwright/types/test.d.ts
@@ -116,67 +116,79 @@ export interface Project<TestArgs = {}, WorkerArgs = {}> extends TestProject {
  * [workerInfo.project](https://playwright.dev/docs/api/class-workerinfo#worker-info-project).
  */
 export interface ProjectInWorker<TestArgs = {}, WorkerArgs = {}> {
+  /**
+   * See [testProject.use](https://playwright.dev/docs/api/class-testproject#test-project-use).
+   */
+  use: UseOptions<PlaywrightTestOptions & TestArgs, PlaywrightWorkerOptions & WorkerArgs>;
+  /**
+   * See [testProject.dependencies](https://playwright.dev/docs/api/class-testproject#test-project-dependencies).
+   */
+  dependencies: Array<string>;
+
   /**
    * See [testProject.grep](https://playwright.dev/docs/api/class-testproject#test-project-grep).
    */
-  grep: RegExp | RegExp[];
+  grep: RegExp|Array<RegExp>;
+
   /**
    * See [testProject.grepInvert](https://playwright.dev/docs/api/class-testproject#test-project-grep-invert).
    */
-  grepInvert: RegExp | RegExp[] | null;
+  grepInvert: null|RegExp|Array<RegExp>;
+
   /**
    * See [testProject.metadata](https://playwright.dev/docs/api/class-testproject#test-project-metadata).
    */
   metadata: Metadata;
+
   /**
    * See [testProject.name](https://playwright.dev/docs/api/class-testproject#test-project-name).
    */
   name: string;
-  /**
-   * See [testProject.dependencies](https://playwright.dev/docs/api/class-testproject#test-project-dependencies).
-   */
-  dependencies: string[];
-  /**
-   * See [testProject.snapshotDir](https://playwright.dev/docs/api/class-testproject#test-project-snapshot-dir).
-   */
-  snapshotDir: string;
+
   /**
    * See [testProject.outputDir](https://playwright.dev/docs/api/class-testproject#test-project-output-dir).
    */
   outputDir: string;
+
   /**
    * See [testProject.repeatEach](https://playwright.dev/docs/api/class-testproject#test-project-repeat-each).
    */
   repeatEach: number;
+
   /**
    * See [testProject.retries](https://playwright.dev/docs/api/class-testproject#test-project-retries).
    */
   retries: number;
+
+  /**
+   * See [testProject.snapshotDir](https://playwright.dev/docs/api/class-testproject#test-project-snapshot-dir).
+   */
+  snapshotDir: string;
+
   /**
    * See [testProject.teardown](https://playwright.dev/docs/api/class-testproject#test-project-teardown).
    */
   teardown?: string;
+
   /**
    * See [testProject.testDir](https://playwright.dev/docs/api/class-testproject#test-project-test-dir).
    */
   testDir: string;
+
   /**
    * See [testProject.testIgnore](https://playwright.dev/docs/api/class-testproject#test-project-test-ignore).
    */
-  testIgnore: string | RegExp | (string | RegExp)[];
+  testIgnore: string|RegExp|Array<string|RegExp>;
+
   /**
    * See [testProject.testMatch](https://playwright.dev/docs/api/class-testproject#test-project-test-match).
    */
-  testMatch: string | RegExp | (string | RegExp)[];
+  testMatch: string|RegExp|Array<string|RegExp>;
+
   /**
    * See [testProject.timeout](https://playwright.dev/docs/api/class-testproject#test-project-timeout).
    */
   timeout: number;
-  /**
-   * See [testProject.use](https://playwright.dev/docs/api/class-testproject#test-project-use).
-   */
-  use: UseOptions<PlaywrightTestOptions & TestArgs, PlaywrightWorkerOptions & WorkerArgs>;
-
 }
 
 type LiteralUnion<T extends U, U = string> = T | (U & { zz_IGNORE_ME?: never });
@@ -1186,50 +1198,6 @@ export type Metadata = { [key: string]: any };
  * [workerInfo.config](https://playwright.dev/docs/api/class-workerinfo#worker-info-config).
  */
 export interface ConfigInWorker<TestArgs = {}, WorkerArgs = {}> {
-  /**
-   * See [testConfig.forbidOnly](https://playwright.dev/docs/api/class-testconfig#test-config-forbid-only).
-   */
-  forbidOnly: boolean;
-  /**
-   * See [testConfig.fullyParallel](https://playwright.dev/docs/api/class-testconfig#test-config-fully-parallel).
-   */
-  fullyParallel: boolean;
-  /**
-   * See [testConfig.globalSetup](https://playwright.dev/docs/api/class-testconfig#test-config-global-setup).
-   */
-  globalSetup: string | null;
-  /**
-   * See [testConfig.globalTeardown](https://playwright.dev/docs/api/class-testconfig#test-config-global-teardown).
-   */
-  globalTeardown: string | null;
-  /**
-   * See [testConfig.globalTimeout](https://playwright.dev/docs/api/class-testconfig#test-config-global-timeout).
-   */
-  globalTimeout: number;
-  /**
-   * See [testConfig.grep](https://playwright.dev/docs/api/class-testconfig#test-config-grep).
-   */
-  grep: RegExp | RegExp[];
-  /**
-   * See [testConfig.grepInvert](https://playwright.dev/docs/api/class-testconfig#test-config-grep-invert).
-   */
-  grepInvert: RegExp | RegExp[] | null;
-  /**
-   * See [testConfig.maxFailures](https://playwright.dev/docs/api/class-testconfig#test-config-max-failures).
-   */
-  maxFailures: number;
-  /**
-   * See [testConfig.metadata](https://playwright.dev/docs/api/class-testconfig#test-config-metadata).
-   */
-  metadata: Metadata;
-  /**
-   * Playwright version.
-   */
-  version: string;
-  /**
-   * See [testConfig.preserveOutput](https://playwright.dev/docs/api/class-testconfig#test-config-preserve-output).
-   */
-  preserveOutput: 'always' | 'never' | 'failures-only';
   /**
    * List of resolved projects.
    */
@@ -1238,27 +1206,6 @@ export interface ConfigInWorker<TestArgs = {}, WorkerArgs = {}> {
    * See [testConfig.reporter](https://playwright.dev/docs/api/class-testconfig#test-config-reporter).
    */
   reporter: ReporterDescription[];
-  /**
-   * See [testConfig.reportSlowTests](https://playwright.dev/docs/api/class-testconfig#test-config-report-slow-tests).
-   */
-  reportSlowTests: { max: number, threshold: number } | null;
-  rootDir: string;
-  /**
-   * See [testConfig.quiet](https://playwright.dev/docs/api/class-testconfig#test-config-quiet).
-   */
-  quiet: boolean;
-  /**
-   * See [testConfig.shard](https://playwright.dev/docs/api/class-testconfig#test-config-shard).
-   */
-  shard: { total: number, current: number } | null;
-  /**
-   * See [testConfig.updateSnapshots](https://playwright.dev/docs/api/class-testconfig#test-config-update-snapshots).
-   */
-  updateSnapshots: 'all' | 'none' | 'missing';
-  /**
-   * See [testConfig.workers](https://playwright.dev/docs/api/class-testconfig#test-config-workers).
-   */
-  workers: number;
   /**
    * See [testConfig.webServer](https://playwright.dev/docs/api/class-testconfig#test-config-web-server).
    */
@@ -1268,6 +1215,107 @@ export interface ConfigInWorker<TestArgs = {}, WorkerArgs = {}> {
    */
   configFile?: string;
 
+  /**
+   * See [testConfig.forbidOnly](https://playwright.dev/docs/api/class-testconfig#test-config-forbid-only).
+   */
+  forbidOnly: boolean;
+
+  /**
+   * See [testConfig.fullyParallel](https://playwright.dev/docs/api/class-testconfig#test-config-fully-parallel).
+   */
+  fullyParallel: boolean;
+
+  /**
+   * See [testConfig.globalSetup](https://playwright.dev/docs/api/class-testconfig#test-config-global-setup).
+   */
+  globalSetup: null|string;
+
+  /**
+   * See [testConfig.globalTeardown](https://playwright.dev/docs/api/class-testconfig#test-config-global-teardown).
+   */
+  globalTeardown: null|string;
+
+  /**
+   * See [testConfig.globalTimeout](https://playwright.dev/docs/api/class-testconfig#test-config-global-timeout).
+   */
+  globalTimeout: number;
+
+  /**
+   * See [testConfig.grep](https://playwright.dev/docs/api/class-testconfig#test-config-grep).
+   */
+  grep: RegExp|Array<RegExp>;
+
+  /**
+   * See [testConfig.grepInvert](https://playwright.dev/docs/api/class-testconfig#test-config-grep-invert).
+   */
+  grepInvert: null|RegExp|Array<RegExp>;
+
+  /**
+   * See [testConfig.maxFailures](https://playwright.dev/docs/api/class-testconfig#test-config-max-failures).
+   */
+  maxFailures: number;
+
+  /**
+   * See [testConfig.metadata](https://playwright.dev/docs/api/class-testconfig#test-config-metadata).
+   */
+  metadata: Metadata;
+
+  /**
+   * See [testConfig.preserveOutput](https://playwright.dev/docs/api/class-testconfig#test-config-preserve-output).
+   */
+  preserveOutput: "always"|"never"|"failures-only";
+
+  /**
+   * See [testConfig.quiet](https://playwright.dev/docs/api/class-testconfig#test-config-quiet).
+   */
+  quiet: boolean;
+
+  /**
+   * See [testConfig.reportSlowTests](https://playwright.dev/docs/api/class-testconfig#test-config-report-slow-tests).
+   */
+  reportSlowTests: null|{
+    /**
+     * The maximum number of slow test files to report. Defaults to `5`.
+     */
+    max: number;
+
+    /**
+     * Test duration in milliseconds that is considered slow. Defaults to 15 seconds.
+     */
+    threshold: number;
+  };
+
+  rootDir: string;
+
+  /**
+   * See [testConfig.shard](https://playwright.dev/docs/api/class-testconfig#test-config-shard).
+   */
+  shard: null|{
+    /**
+     * The total number of shards.
+     */
+    total: number;
+
+    /**
+     * The index of the shard to execute, one-based.
+     */
+    current: number;
+  };
+
+  /**
+   * See [testConfig.updateSnapshots](https://playwright.dev/docs/api/class-testconfig#test-config-update-snapshots).
+   */
+  updateSnapshots: "all"|"none"|"missing";
+
+  /**
+   * Playwright version.
+   */
+  version: string;
+
+  /**
+   * See [testConfig.workers](https://playwright.dev/docs/api/class-testconfig#test-config-workers).
+   */
+  workers: number;
 }
 
 export type TestStatus = 'passed' | 'failed' | 'timedOut' | 'skipped' | 'interrupted';
diff --git a/packages/playwright/types/testReporter.d.ts b/packages/playwright/types/testReporter.d.ts
index 917a4256b0..ff9c5e05b3 100644
--- a/packages/playwright/types/testReporter.d.ts
+++ b/packages/playwright/types/testReporter.d.ts
@@ -25,50 +25,6 @@ type UseOptions<TestArgs, WorkerArgs> = Partial<WorkerArgs> & Partial<TestArgs>;
  * [reporter.onBegin(config, suite)](https://playwright.dev/docs/api/class-reporter#reporter-on-begin).
  */
 export interface FullConfig<TestArgs = {}, WorkerArgs = {}> {
-  /**
-   * See [testConfig.forbidOnly](https://playwright.dev/docs/api/class-testconfig#test-config-forbid-only).
-   */
-  forbidOnly: boolean;
-  /**
-   * See [testConfig.fullyParallel](https://playwright.dev/docs/api/class-testconfig#test-config-fully-parallel).
-   */
-  fullyParallel: boolean;
-  /**
-   * See [testConfig.globalSetup](https://playwright.dev/docs/api/class-testconfig#test-config-global-setup).
-   */
-  globalSetup: string | null;
-  /**
-   * See [testConfig.globalTeardown](https://playwright.dev/docs/api/class-testconfig#test-config-global-teardown).
-   */
-  globalTeardown: string | null;
-  /**
-   * See [testConfig.globalTimeout](https://playwright.dev/docs/api/class-testconfig#test-config-global-timeout).
-   */
-  globalTimeout: number;
-  /**
-   * See [testConfig.grep](https://playwright.dev/docs/api/class-testconfig#test-config-grep).
-   */
-  grep: RegExp | RegExp[];
-  /**
-   * See [testConfig.grepInvert](https://playwright.dev/docs/api/class-testconfig#test-config-grep-invert).
-   */
-  grepInvert: RegExp | RegExp[] | null;
-  /**
-   * See [testConfig.maxFailures](https://playwright.dev/docs/api/class-testconfig#test-config-max-failures).
-   */
-  maxFailures: number;
-  /**
-   * See [testConfig.metadata](https://playwright.dev/docs/api/class-testconfig#test-config-metadata).
-   */
-  metadata: Metadata;
-  /**
-   * Playwright version.
-   */
-  version: string;
-  /**
-   * See [testConfig.preserveOutput](https://playwright.dev/docs/api/class-testconfig#test-config-preserve-output).
-   */
-  preserveOutput: 'always' | 'never' | 'failures-only';
   /**
    * List of resolved projects.
    */
@@ -77,38 +33,117 @@ export interface FullConfig<TestArgs = {}, WorkerArgs = {}> {
    * See [testConfig.reporter](https://playwright.dev/docs/api/class-testconfig#test-config-reporter).
    */
   reporter: ReporterDescription[];
-  /**
-   * See [testConfig.reportSlowTests](https://playwright.dev/docs/api/class-testconfig#test-config-report-slow-tests).
-   */
-  reportSlowTests: { max: number, threshold: number } | null;
-  rootDir: string;
-  /**
-   * See [testConfig.quiet](https://playwright.dev/docs/api/class-testconfig#test-config-quiet).
-   */
-  quiet: boolean;
-  /**
-   * See [testConfig.shard](https://playwright.dev/docs/api/class-testconfig#test-config-shard).
-   */
-  shard: { total: number, current: number } | null;
-  /**
-   * See [testConfig.updateSnapshots](https://playwright.dev/docs/api/class-testconfig#test-config-update-snapshots).
-   */
-  updateSnapshots: 'all' | 'none' | 'missing';
-  /**
-   * See [testConfig.workers](https://playwright.dev/docs/api/class-testconfig#test-config-workers).
-   */
-  workers: number;
   /**
    * See [testConfig.webServer](https://playwright.dev/docs/api/class-testconfig#test-config-web-server).
    */
-  webServer: NonNullable<ConfigInWorker['webServer']>|null;
+  webServer: ConfigInWorker['webServer'];
   /**
    * Path to the configuration file (if any) used to run the tests.
    */
   configFile?: string;
 
-}
+  /**
+   * See [testConfig.forbidOnly](https://playwright.dev/docs/api/class-testconfig#test-config-forbid-only).
+   */
+  forbidOnly: boolean;
 
+  /**
+   * See [testConfig.fullyParallel](https://playwright.dev/docs/api/class-testconfig#test-config-fully-parallel).
+   */
+  fullyParallel: boolean;
+
+  /**
+   * See [testConfig.globalSetup](https://playwright.dev/docs/api/class-testconfig#test-config-global-setup).
+   */
+  globalSetup: null|string;
+
+  /**
+   * See [testConfig.globalTeardown](https://playwright.dev/docs/api/class-testconfig#test-config-global-teardown).
+   */
+  globalTeardown: null|string;
+
+  /**
+   * See [testConfig.globalTimeout](https://playwright.dev/docs/api/class-testconfig#test-config-global-timeout).
+   */
+  globalTimeout: number;
+
+  /**
+   * See [testConfig.grep](https://playwright.dev/docs/api/class-testconfig#test-config-grep).
+   */
+  grep: RegExp|Array<RegExp>;
+
+  /**
+   * See [testConfig.grepInvert](https://playwright.dev/docs/api/class-testconfig#test-config-grep-invert).
+   */
+  grepInvert: null|RegExp|Array<RegExp>;
+
+  /**
+   * See [testConfig.maxFailures](https://playwright.dev/docs/api/class-testconfig#test-config-max-failures).
+   */
+  maxFailures: number;
+
+  /**
+   * See [testConfig.metadata](https://playwright.dev/docs/api/class-testconfig#test-config-metadata).
+   */
+  metadata: Metadata;
+
+  /**
+   * See [testConfig.preserveOutput](https://playwright.dev/docs/api/class-testconfig#test-config-preserve-output).
+   */
+  preserveOutput: "always"|"never"|"failures-only";
+
+  /**
+   * See [testConfig.quiet](https://playwright.dev/docs/api/class-testconfig#test-config-quiet).
+   */
+  quiet: boolean;
+
+  /**
+   * See [testConfig.reportSlowTests](https://playwright.dev/docs/api/class-testconfig#test-config-report-slow-tests).
+   */
+  reportSlowTests: null|{
+    /**
+     * The maximum number of slow test files to report. Defaults to `5`.
+     */
+    max: number;
+
+    /**
+     * Test duration in milliseconds that is considered slow. Defaults to 15 seconds.
+     */
+    threshold: number;
+  };
+
+  rootDir: string;
+
+  /**
+   * See [testConfig.shard](https://playwright.dev/docs/api/class-testconfig#test-config-shard).
+   */
+  shard: null|{
+    /**
+     * The total number of shards.
+     */
+    total: number;
+
+    /**
+     * The index of the shard to execute, one-based.
+     */
+    current: number;
+  };
+
+  /**
+   * See [testConfig.updateSnapshots](https://playwright.dev/docs/api/class-testconfig#test-config-update-snapshots).
+   */
+  updateSnapshots: "all"|"none"|"missing";
+
+  /**
+   * Playwright version.
+   */
+  version: string;
+
+  /**
+   * See [testConfig.workers](https://playwright.dev/docs/api/class-testconfig#test-config-workers).
+   */
+  workers: number;
+}
 
 /**
  * Runtime representation of the test project configuration that is passed to {@link Reporter}. It exposes some of the
@@ -117,67 +152,79 @@ export interface FullConfig<TestArgs = {}, WorkerArgs = {}> {
  * [suite.project()](https://playwright.dev/docs/api/class-suite#suite-project).
  */
 export interface FullProject<TestArgs = {}, WorkerArgs = {}> {
+  /**
+   * See [testProject.use](https://playwright.dev/docs/api/class-testproject#test-project-use).
+   */
+  use: UseOptions<PlaywrightTestOptions & TestArgs, PlaywrightWorkerOptions & WorkerArgs>;
+  /**
+   * See [testProject.dependencies](https://playwright.dev/docs/api/class-testproject#test-project-dependencies).
+   */
+  dependencies: Array<string>;
+
   /**
    * See [testProject.grep](https://playwright.dev/docs/api/class-testproject#test-project-grep).
    */
-  grep: RegExp | RegExp[];
+  grep: RegExp|Array<RegExp>;
+
   /**
    * See [testProject.grepInvert](https://playwright.dev/docs/api/class-testproject#test-project-grep-invert).
    */
-  grepInvert: RegExp | RegExp[] | null;
+  grepInvert: null|RegExp|Array<RegExp>;
+
   /**
    * See [testProject.metadata](https://playwright.dev/docs/api/class-testproject#test-project-metadata).
    */
   metadata: Metadata;
+
   /**
    * See [testProject.name](https://playwright.dev/docs/api/class-testproject#test-project-name).
    */
   name: string;
-  /**
-   * See [testProject.dependencies](https://playwright.dev/docs/api/class-testproject#test-project-dependencies).
-   */
-  dependencies: string[];
-  /**
-   * See [testProject.snapshotDir](https://playwright.dev/docs/api/class-testproject#test-project-snapshot-dir).
-   */
-  snapshotDir: string;
+
   /**
    * See [testProject.outputDir](https://playwright.dev/docs/api/class-testproject#test-project-output-dir).
    */
   outputDir: string;
+
   /**
    * See [testProject.repeatEach](https://playwright.dev/docs/api/class-testproject#test-project-repeat-each).
    */
   repeatEach: number;
+
   /**
    * See [testProject.retries](https://playwright.dev/docs/api/class-testproject#test-project-retries).
    */
   retries: number;
+
+  /**
+   * See [testProject.snapshotDir](https://playwright.dev/docs/api/class-testproject#test-project-snapshot-dir).
+   */
+  snapshotDir: string;
+
   /**
    * See [testProject.teardown](https://playwright.dev/docs/api/class-testproject#test-project-teardown).
    */
   teardown?: string;
+
   /**
    * See [testProject.testDir](https://playwright.dev/docs/api/class-testproject#test-project-test-dir).
    */
   testDir: string;
+
   /**
    * See [testProject.testIgnore](https://playwright.dev/docs/api/class-testproject#test-project-test-ignore).
    */
-  testIgnore: string | RegExp | (string | RegExp)[];
+  testIgnore: string|RegExp|Array<string|RegExp>;
+
   /**
    * See [testProject.testMatch](https://playwright.dev/docs/api/class-testproject#test-project-test-match).
    */
-  testMatch: string | RegExp | (string | RegExp)[];
+  testMatch: string|RegExp|Array<string|RegExp>;
+
   /**
    * See [testProject.timeout](https://playwright.dev/docs/api/class-testproject#test-project-timeout).
    */
   timeout: number;
-  /**
-   * See [testProject.use](https://playwright.dev/docs/api/class-testproject#test-project-use).
-   */
-  use: UseOptions<PlaywrightTestOptions & TestArgs, PlaywrightWorkerOptions & WorkerArgs>;
-
 }
 
 /**
@@ -207,10 +254,6 @@ export interface Suite {
    * -> ...`describe` -> `test`.
    */
   type: 'root' | 'project' | 'file' | 'describe';
-  /**
-   * Configuration of the project this suite belongs to, or [void] for the root suite.
-   */
-  project(): FullProject | undefined;
   /**
    * Returns the list of all test cases in this suite and its descendants, as opposite to
    * [suite.tests](https://playwright.dev/docs/api/class-suite#suite-tests).
@@ -225,6 +268,11 @@ export interface Suite {
    */
   entries(): Array<TestCase|Suite>;
 
+  /**
+   * Configuration of the project this suite belongs to, or [void] for the root suite.
+   */
+  project(): FullProject|undefined;
+
   /**
    * Returns a list of titles from the root down to this suite.
    */
@@ -605,13 +653,6 @@ export interface FullResult {
  * to enhance user experience.
  */
 export interface Reporter {
-  /**
-   * Called once before running tests. All tests have been already discovered and put into a hierarchy of {@link
-   * Suite}s.
-   * @param config Resolved configuration.
-   * @param suite The root suite that contains all projects, files and test cases.
-   */
-  onBegin?(config: FullConfig, suite: Suite): void;
   /**
    * Called after all tests have been run, or testing has been interrupted. Note that this method may return a [Promise]
    * and Playwright Test will await it. Reporter is allowed to override the status and hence affect the exit code of the
@@ -625,6 +666,14 @@ export interface Reporter {
    * - `'interrupted'` - Interrupted by the user.
    */
   onEnd?(result: FullResult): Promise<{ status?: FullResult['status'] } | undefined | void> | void;
+  /**
+   * Called once before running tests. All tests have been already discovered and put into a hierarchy of {@link
+   * Suite}s.
+   * @param config Resolved configuration.
+   * @param suite The root suite that contains all projects, files and test cases.
+   */
+  onBegin?(config: FullConfig, suite: Suite): void;
+
   /**
    * Called on some global error, for example unhandled exception in the worker process.
    * @param error The error.
diff --git a/utils/generate_types/overrides-test.d.ts b/utils/generate_types/overrides-test.d.ts
index fe07d9cc07..a10938a49a 100644
--- a/utils/generate_types/overrides-test.d.ts
+++ b/utils/generate_types/overrides-test.d.ts
@@ -35,27 +35,9 @@ export interface Project<TestArgs = {}, WorkerArgs = {}> extends TestProject {
   use?: UseOptions<TestArgs, WorkerArgs>;
 }
 
-// [internal] !!! DO NOT ADD TO THIS !!!
-// [internal] It is part of the public API and is computed from the user's config.
-// [internal] If you need new fields internally, add them to FullProjectInternal instead.
 export interface ProjectInWorker<TestArgs = {}, WorkerArgs = {}> {
-  grep: RegExp | RegExp[];
-  grepInvert: RegExp | RegExp[] | null;
-  metadata: Metadata;
-  name: string;
-  dependencies: string[];
-  snapshotDir: string;
-  outputDir: string;
-  repeatEach: number;
-  retries: number;
-  teardown?: string;
-  testDir: string;
-  testIgnore: string | RegExp | (string | RegExp)[];
-  testMatch: string | RegExp | (string | RegExp)[];
-  timeout: number;
   use: UseOptions<PlaywrightTestOptions & TestArgs, PlaywrightWorkerOptions & WorkerArgs>;
 }
-// [internal] !!! DO NOT ADD TO THIS !!! See prior note.
 
 type LiteralUnion<T extends U, U = string> = T | (U & { zz_IGNORE_ME?: never });
 
@@ -71,32 +53,10 @@ export interface Config<TestArgs = {}, WorkerArgs = {}> extends TestConfig {
 
 export type Metadata = { [key: string]: any };
 
-// [internal] !!! DO NOT ADD TO THIS !!!
-// [internal] It is part of the public API and is computed from the user's config.
-// [internal] If you need new fields internally, add them to FullConfigInternal instead.
 export interface ConfigInWorker<TestArgs = {}, WorkerArgs = {}> {
-  forbidOnly: boolean;
-  fullyParallel: boolean;
-  globalSetup: string | null;
-  globalTeardown: string | null;
-  globalTimeout: number;
-  grep: RegExp | RegExp[];
-  grepInvert: RegExp | RegExp[] | null;
-  maxFailures: number;
-  metadata: Metadata;
-  version: string;
-  preserveOutput: 'always' | 'never' | 'failures-only';
   projects: ProjectInWorker<TestArgs, WorkerArgs>[];
   reporter: ReporterDescription[];
-  reportSlowTests: { max: number, threshold: number } | null;
-  rootDir: string;
-  quiet: boolean;
-  shard: { total: number, current: number } | null;
-  updateSnapshots: 'all' | 'none' | 'missing';
-  workers: number;
   webServer: TestConfigWebServer | null;
-  configFile?: string;
-  // [internal] !!! DO NOT ADD TO THIS !!! See prior note.
 }
 
 export type TestStatus = 'passed' | 'failed' | 'timedOut' | 'skipped' | 'interrupted';
diff --git a/utils/generate_types/overrides-testReporter.d.ts b/utils/generate_types/overrides-testReporter.d.ts
index 40c42d4f34..129faf30fc 100644
--- a/utils/generate_types/overrides-testReporter.d.ts
+++ b/utils/generate_types/overrides-testReporter.d.ts
@@ -19,60 +19,18 @@ export type { TestStatus } from './test';
 
 type UseOptions<TestArgs, WorkerArgs> = Partial<WorkerArgs> & Partial<TestArgs>;
 
-// [internal] !!! DO NOT ADD TO THIS !!!
-// [internal] It is part of the public API and is computed from the user's config.
-// [internal] If you need new fields internally, add them to FullConfigInternal instead.
 export interface FullConfig<TestArgs = {}, WorkerArgs = {}> {
-  forbidOnly: boolean;
-  fullyParallel: boolean;
-  globalSetup: string | null;
-  globalTeardown: string | null;
-  globalTimeout: number;
-  grep: RegExp | RegExp[];
-  grepInvert: RegExp | RegExp[] | null;
-  maxFailures: number;
-  metadata: Metadata;
-  version: string;
-  preserveOutput: 'always' | 'never' | 'failures-only';
   projects: FullProject<TestArgs, WorkerArgs>[];
   reporter: ReporterDescription[];
-  reportSlowTests: { max: number, threshold: number } | null;
-  rootDir: string;
-  quiet: boolean;
-  shard: { total: number, current: number } | null;
-  updateSnapshots: 'all' | 'none' | 'missing';
-  workers: number;
-  webServer: NonNullable<ConfigInWorker['webServer']>|null;
-  configFile?: string;
+  webServer: ConfigInWorker['webServer'];
 }
-// [internal] !!! DO NOT ADD TO THIS !!! See prior note.
 
-
-// [internal] !!! DO NOT ADD TO THIS !!!
-// [internal] It is part of the public API and is computed from the user's config.
-// [internal] If you need new fields internally, add them to FullProjectInternal instead.
 export interface FullProject<TestArgs = {}, WorkerArgs = {}> {
-  grep: RegExp | RegExp[];
-  grepInvert: RegExp | RegExp[] | null;
-  metadata: Metadata;
-  name: string;
-  dependencies: string[];
-  snapshotDir: string;
-  outputDir: string;
-  repeatEach: number;
-  retries: number;
-  teardown?: string;
-  testDir: string;
-  testIgnore: string | RegExp | (string | RegExp)[];
-  testMatch: string | RegExp | (string | RegExp)[];
-  timeout: number;
   use: UseOptions<PlaywrightTestOptions & TestArgs, PlaywrightWorkerOptions & WorkerArgs>;
 }
-// [internal] !!! DO NOT ADD TO THIS !!! See prior note.
 
 export interface Suite {
   type: 'root' | 'project' | 'file' | 'describe';
-  project(): FullProject | undefined;
 }
 
 export interface TestCase {
@@ -109,7 +67,6 @@ export interface FullResult {
 }
 
 export interface Reporter {
-  onBegin?(config: FullConfig, suite: Suite): void;
   onEnd?(result: FullResult): Promise<{ status?: FullResult['status'] } | undefined | void> | void;
 }